ASTROSAT CZTI

Data Quality Report

Orbit 20180606_G08_081T01_9000002144_level2

Creation date: 2018-06-08T17:46:32.923852
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1G08_081T01_9000002144cztM0_level2_bc.evt modeM0/AS1G08_081T01_9000002144cztM0_level2_quad_clean.evt
Size (bytes)2,913,707,5201,060,519,680
Size2.7 GB 1011.4 MB
Events in quadrant A20,165,0976,816,301
Events in quadrant B18,222,4456,698,244
Events in quadrant C20,609,2796,620,080
Events in quadrant D23,868,3496,575,806

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016120
B016120
C016120
D016120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740390
B01712460
C01735100
D01867460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7895110631.346405%
B7895112781.618726%
C789517780.985421%
D7895116112.040506%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 91632 78954 3 3 0.00% 0.00%
B 91632 78952 23 23 0.03% 0.03%
C 91632 78953 5 5 0.01% 0.01%
D 91632 78951 269 269 0.29% 0.34%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 8 15 2571245 2862.52 4148 4066 896.8
A 0 23 807566 895.94 4148 4066 896.8
A 12 189 571806 633.06 4148 4066 896.8
B 0 189 698420 903.95 4125 4021 768.2
B 0 219 213368 272.52 4125 4021 768.2
B 0 229 211618 270.24 4125 4021 768.2
C 3 233 4710499 5344.57 4020 3969 880.6
C 6 96 80097 86.45 4020 3969 880.6
C 8 128 37182 37.72 4020 3969 880.6
D 12 110 5140018 5264.38 4098 3961 975.6
D 10 199 1456723 1489.06 4098 3961 975.6
D 2 152 781366 796.83 4098 3961 975.6

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter